Electronics And Instrumentation — Part 2 MCQs with Explanations

1, 2 and 3 is the correct answer to “Which of the following are piezo electric substances? 1. Barium titanate 2. Lead titanate 3. Lead Zirconate 4. Cadmium and sulphate”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Parallel is the correct answer to “A voltmeter is connected in a ___________ with the circuit component across which potential difference is to be measured.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

1.5 m/s is the correct answer to “The slewing speed of X-Y recorder is”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Decreases is the correct answer to “The resistance of LDR ____________ when exposed to radiant energy.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Displacement is the correct answer to “Fiber optic sensor can be used to sense ____________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Glass electrode is the correct answer to “Most commonly used indicator electrode is”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Differential amplifier is the correct answer to “To reduce common mode interference during recording of bio signals one can use __________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

3 kΩ is the correct answer to “A series ohmmeter circuit uses a 3 V battery and a 1 mA meter movement. What is the half-scale resistance for this movement”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Larger is the correct answer to “The size of air cored transducers in comparison to the iron core parts is”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

7.35 is the correct answer to “pH value of venous blood is”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

1 A.V is the correct answer to “The resolution limit of electron microscope is”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Stable half cell potential is the correct answer to “Silver chloride electrode is used as a reference electrode due to its”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Another emf is the correct answer to “In X-Y recorders, the self balancing potentiometers plot emf as a function of”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Time is the correct answer to “In strip chart recorders, the self balancing potentiometers plot emf as a function of”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Decrease is the correct answer to “When an ammeter is inserted in the circuit, the circuit current will ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

X-Y recording is the correct answer to “Stress and strain curves are plotted using”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Constant is the correct answer to “A recorder is said to have good frequency response when the sensitivity of the system is _________ for all frequencies present in the signal.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

An electrical quantity into a non electrical quantity is the correct answer to “An inverse transducer is a device which converts”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Phosphorous is the correct answer to “The materil used to coat inside the face of CRT is ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Controlling its output is the correct answer to “Feedback in an amplifier always helps in”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Heart sound is the correct answer to “The capacitance microphone is used for the detection of”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Inertia is the correct answer to “Using mechanical chopper we cannot achieve high chopping rates due to their”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

$$\frac{{\text{G}}}{{{\text{n}} - 1}}$$ is the correct answer to “An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

(n - 1)G is the correct answer to “A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Variable persistence storage is the correct answer to “_____________ is also known as halftone storage or mersh storage.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

$$\frac{{{\text{k}}\Omega }}{{\text{V}}}$$ is the correct answer to “The sensitivity of a multimeter is given in ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

1014Ω is the correct answer to “An electrometer amplifier has high input impedance of”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Blood flow in heart lung machine is the correct answer to “Venturi is associated with”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Power level is the correct answer to “The decibel is a measure of”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Non inverting mode is the correct answer to “When the input of differential amplifier V1 = 0, then the differential amplifier is said to be operated in”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Single ended mode is the correct answer to “When either one of the inputs to the differential amplifier is equal to zero then it is said to be operated in”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Sensitivity is the correct answer to “The _________ of a recording system is the magnitude of input voltage required to produce a standard deflection in a recorded trace.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Increase input impedance is the correct answer to “Pre amplifier isolation in ECG circuit is to”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Ferrite is the correct answer to “LVDT windings are wound on”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

10 MΩ is the correct answer to “The input resistance of a VTVM is about ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Input isolation is the correct answer to “When a number of components are fabricated on same IC chip it is necessary to provide isolation between two different components for input interconnection is called __________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

When external mechanical force is applied to i is the correct answer to “Piezo electric crystal can produce an emf”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

Mechanical displacement into a change of resistance is the correct answer to “A strain gauge is a passive transducer and is employed for converting.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

CRO is the correct answer to “The most accurate device for measuring voltage is ___________.”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.

1 Photo emissive cathode & 2 dynodes is the correct answer to “Photo multiplier consists of”. This question is standard in competitive examination syllabi for Electronics And Instrumentation.